Bolton did sell out yes. When did he sell out? When he made mediocre mass produced AOR tat like "Everybody's Crazy" which sounds these days as damning an indictment as anything for what's supposed to be the classic sound we love. Dated twaddle. And if we're talking image round here today MBo looked like a big daft tart on that sleeve. And even though the results to my ears are better Blackjack wasn't what he was about. That too was chasing a then lucrative AOR dollar. Go back to the Bolotin albums of the mid 70s and you'll see that MBo's heart has always been after mass public appeal. Good luck to him - he's now doing the music he loves & he does have a wonderful set of pipes. As for Marx, I can't really see anything (apart from a decline in quality) to mark out his earlier from later work .. Dickie's a pop guy too.